When should we adjust for a covariate in a regression model? My new Methods Primer paper in @BMJMedicine summarised some key principles: bmjmedicine.bmj.com/content/4/1/e0…
bmjmedicine.bmj.com Regression adjustment for causal inference Causal inference identifies and quantifies the effect of an exposure (the hypothetical cause) to an outcome. While randomised controlled trial design is the preferred method for establishing and... 